Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 64BDE3800008D; Sun, 6 May 2012 12:51:07 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SR4f3-0007Hh-CV for rs_out_1@blacksheep.org; Sun, 06 May 2012 17:50:17 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SR4f2-0007HY-SQ for rsgb_lf_group@blacksheep.org; Sun, 06 May 2012 17:50:16 +0100 Received: from imr-da01.mx.aol.com ([205.188.105.143]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SR4f0-0001hr-0H for rsgb_lf_group@blacksheep.org; Sun, 06 May 2012 17:50:15 +0100 Received: from mtaout-mb06.r1000.mx.aol.com (mtaout-mb06.r1000.mx.aol.com [172.29.41.70]) by imr-da01.mx.aol.com (8.14.1/8.14.1) with ESMTP id q46Go9Jp013946 for ; Sun, 6 May 2012 12:50:09 -0400 Received: from White (nrbg-4dbf82c8.pool.mediaWays.net [77.191.130.200]) by mtaout-mb06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 51D43E0000AE for ; Sun, 6 May 2012 12:50:07 -0400 (EDT) Message-ID: <9841B9347AC5444EB45E2B22D9C98330@White> From: "Markus Vester" To: References: <4F97E9C2.9030000@iup.uni-heidelberg.de><7B23411450514A5CB804E6D2C65A1876@JimPC> Date: Sun, 6 May 2012 18:50:04 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1336323009; bh=wy5Rg8ZNHpzUp6UXFMwuHBu8bZEFk7uGFm6dREGP4cQ=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=j5ALACNOzz6+B30/W/b3rqq044dYlgaeNQdXWnifq/0oPbwOodVYd4s7XVQI5I1P4 2kQJ8U30j6oc6qS+MAvJ6XW/17FEwuEbImDFRf9zotEzZuAYej0Tkq0iu/EzZ09CIY V3zCuazWWpPlKZlQ7ucVrUAvM8qHZV33o+XotTws= X-AOL-SCOLL-SCORE: 0:2:369045984:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 1.0 (+) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. 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Content preview: Andy, LF, some time ago, Wolf DL4YHF wrote a pair of sound utilities, SndInput and SndOutpt, which create or consume a continuous stream of raw audio files: http://www.qsl.net/dl4yhf/snd_utl1.html [...] Content analysis details: (1.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [205.188.105.143 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.0 FREEMAIL_REPLY From and body contain different freemails X-Scan-Signature: 3efbf4053c1a70bbeb6c0a0cc657f05e Subject: Re: LF: Generating 8970 Hz carrier... - DL4YHF Audio utilities Content-Type: multipart/alternative; boundary="----=_NextPart_000_001C_01CD2BB9.0CC9D370" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:416477856:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d021.1 ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d40ca4fa6abfb05af X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_001C_01CD2BB9.0CC9D370 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Andy, LF, some time ago, Wolf DL4YHF wrote a pair of sound utilities, SndInput and = SndOutpt, which create or consume a continuous stream of raw audio = files: http://www.qsl.net/dl4yhf/snd_utl1.html I have found these extremely useful, as they have allowed me to = implement quasi-realtime audio processing in QuickBasic, my favourite = but super-ancient programming language. There is an option for = downconversion and decimation into / from complex IQ data, which greatly = enhances efficiency for narrowband applications (eg. slow Hell). = SndOutpt can also generate a sinusoidal test tone, which can be = frequency shifted in a phase-continuous manner by DOS commands Best 73, Markus (DF6NM) From: Andy Talbot=20 Sent: Sunday, May 06, 2012 6:14 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Generating 8970 Hz carrier with Spectrum Lab ? ... A custom A/D could send its data in its own format via USB, or serial COM port or whatever, to software that saves blocks in the format of a .WAV file. Then the decoding software works on the resulting .WAV files. It won't be real time any more, but none of these slow data modes actually are that real time. The speed of reading and switching (using a pair of ping-pong files if necessary) can make the whole system pseudo real time - in the same way as WSJT appears to run continuously. Now, any A/D design can be used provided the results are written to a .WAV file. Wav files can have any sample rate (so long as it is an integer number of Hz) and do not have to be restricted to 48000, 11025 or whatever, so custom LF receivers using quite slow A/D converters and low sample rates are now valid. Just throwing that idea into the ring.. Andy www.g4jnt.com ------=_NextPart_000_001C_01CD2BB9.0CC9D370 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Andy, LF,
 
some time ago, Wolf DL4YHF wrote a pair = of sound=20 utilities, SndInput and SndOutpt, which create or consume a continuous = stream of=20 raw audio files:
 
http://www.qsl.net/dl4yh= f/snd_utl1.html
 
I have found=20 these extremely useful, as they have allowed me to implement = quasi-realtime=20 audio processing in QuickBasic, my favourite but super-ancient = programming=20 language. There is an option for downconversion and decimation into = / from=20 complex IQ data, which greatly enhances efficiency for narrowband = applications=20 (eg. slow Hell). SndOutpt can also generate a sinusoidal test tone, = which can be=20 frequency shifted in a phase-continuous manner by DOS = commands
 
Best = 73,
Markus = (DF6NM)
 

From: Andy Talbot
Sent: Sunday, May 06, 2012 6:14 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: Generating 8970 Hz carrier with Spectrum = Lab=20 ?

...
A custom A/D could send its data in its own format = via=20 USB, or serial
COM port or whatever, to software that saves blocks in = the=20 format of a
.WAV file.  Then the decoding software works on the=20 resulting .WAV
files.   It won't be real time any more, but = none of=20 these slow data
modes actually are that real time.  The speed of = reading=20 and switching
(using a pair of ping-pong files if necessary) can make = the=20 whole
system pseudo real time - in the same way as WSJT appears to=20 run
continuously.

Now, any A/D design can be used provided the = results=20 are written to a
.WAV file.   Wav files can have any sample = rate=20 (so long as it is an
integer number of Hz) and do not have to be = restricted=20 to 48000, 11025
or whatever, so custom LF receivers using quite slow = A/D=20 converters
and low sample rates are now valid.

Just throwing = that idea=20 into the ring..

Andy
www.g4jnt.com

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